Q-035 BUNA 70 Q RING

QH70035 is an AS568-035 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 2.239 in (56.87 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.379 in (60.43 mm). In service, this quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

As a material, Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, strong abrasion and tear resistance. This material stands up to many alcohols, petroleum-based oils, and water. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or automotive brake fluid. The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.

You will find this material specified across automotive, hydraulic and pneumatic systems, and agricultural equipment.

Reference part number QH70035 when ordering; the item is sold individually. Unit weight is approximately 0.624 g and nominal inside diameter is listed as 2 1/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.